说明：  介绍了TMS320C5402实现正弦信号发生器的设计原理和实现方法。该信号发生器所产生的正弦波波形清晰、稳定性好，调频、调幅功能均由软件实现。
(Introduced the TMS320C5402 achieve sinusoidal signal generator design principle and realization method. The signal generator sine wave generated by a clear, good stability, FM, AM function by the software.)